The goal of this clinical trial is to learn if the Move Sapiens exergame in Virtual Reality (VR), incorporated with a short model of High-Intensity Interval Training (HIIT), works as an intervention tool for adolescents with Attention-Deficit Hyperactivity/Disorder (ADHD). It will also assess the safety and effectiveness of this intervention. The main questions it aims to answer are: Does interacting with HIIT Move Sapiens® in VR improve attention and executive function in adolescents with ADHD? Does this intervention reduce other symptoms such as sleep problems and anxiety? Researchers will compare the HIIT VR exergame to a control condition. Participants will: Engage with Move Sapiens® in VR (intervention group) or participate in a control condition with an adapted version of the exergame without physical exercise (control group) (five times a week for 4 weeks). Visit the clinic for assessments and tests. The analysis will involve comparing group means using a mixed model and calculating effect sizes with Cohen's d to determine the clinical relevance of the results